Audio Media Reader for Embedded Software Updates
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Solution Overview
Problem
Updating software in embedded audio systems is challenging due to restricted access to the system hardware and bus connections, making it difficult to physically connect and modify the memory chips.
Innovation Solution
A system and method that uses an audio media source to encode digital data, allowing an audio media reader to detect and process encoded data for programming a device, enabling software updates without physical access to the system hardware by using an audio media source, stream detector, and audio receiver device to identify and reprogram the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If software is updated by physically accessing memory chips and system bus, then software can be reprogrammed, but physical access to hardware is required which is difficult in embedded systems
Solution Approach 1:
The patent introduces an audio media reader and audio processing system as an intermediary channel. Software update data is encoded within audio bitstreams (such as AC3, AAC, or other audio formats) that are normally used for audio playback. The audio processor extracts and processes this embedded data to update firmware or software without requiring physical access to memory chips or system bus connections.
Solution Approach 2:
The audio system is made multi-functional by enabling it to perform both its primary audio playback function and a secondary software update function. The same audio media reader, audio processor, and communication interface are used for both playing audio content and receiving/processing software update data, eliminating the need for separate update hardware or physical access mechanisms.
2Ease of repair
If software updates require physical connection to system hardware, then memory chips can be accessed, but the update process becomes difficult when hardware is enclosed in dashboards or protected enclosures
Solution Approach 1:
The patent replaces the mechanical/physical access method (opening enclosures, accessing circuit boards, connecting to system bus) with a signal-based method. Software updates are transmitted through audio signals that can be received wirelessly or through standard audio interfaces, substituting physical hardware access with electromagnetic signal processing.
Solution Approach 2:
An audio communication channel serves as an intermediary medium between the update source and the embedded system. Instead of directly accessing protected hardware components, the system receives software update data through the audio interface, which acts as a safe and accessible mediator that bypasses physical security restrictions.
3Productivity
If a burner is connected to system bus to reprogram flash memory, then software can be updated, but the burner requires physical access to bus signals and memory locations
Solution Approach 1:
The audio processing system performs multiple functions: it processes audio signals for playback and simultaneously processes embedded software update data within the same audio bitstream. The audio processor, memory, and communication interfaces are used for both audio functionality and software maintenance, eliminating the need for separate burner hardware and bus access mechanisms.
Solution Approach 2:
The patent merges the software update function with the audio processing function. Software update data is combined with audio data in the same transmission channel and processed by the same hardware components. This consolidation allows the system to receive and process updates through its existing audio infrastructure without requiring additional burners or bus access capabilities.
Data Source
AI summary
Systems and methods for processing encoded digital data for programming a device to be re-programmed in an audio playback system. The system includes an audio media source containing digital data having audio data or encoded data in an audio data format. An audio media reader reads the digital data from the audio media source. A stream detector receives the digital data from the audio media reader and detects whether the received digital data includes encoded data formatted as audio data or audio data. An audio receiver device receives the audio data and processes the audio data for playback. A device to be re-programmed uses the encoded data formatted as audio data.